American Water Works Co (MIL:1AWK) Cyclically Adjusted PB Ratio: (As of Sep. 21, 2026)

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MIL:1AWK American Water Works Co Inc MIL:1AWK
61 GF Score
Price €120.05
GF Value €135.86
Valuation Modestly Undervalued
! 3 Warning Signs
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What is American Water Works Co Cyclically Adjusted PB Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


American Water Works Co  (MIL:1AWK) Cyclically Adjusted PB Ratio Explanation

Compared with the regular PB Ratio, which works poorly for cyclical businesses, the Cyclically Adjusted PB Ratio smoothed out the fluctuations of book value during business cycles. Therefore it is more accurate in reflecting the valuation of the company.

If a company has consistent business performance, the Cyclically Adjusted PB Ratio should give similar results to regular PB Ratio.


American Water Works Co Cyclically Adjusted PB Ratio Related Terms


American Water Works Co Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for American Water Works Co's Cyclically Adjusted PB Ratio can be seen below:

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

American Water Works Co Cyclically Adjusted PB Ratio Chart

American Water Works Co Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Cyclically Adjusted PB Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only - - 3.33 3.06 2.70

American Water Works Co Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
Cyclically Adjusted PB Ratio Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 2.93 2.90 2.72 2.82 2.69

MIL:1AWK vs WTRG, AWR, CWT: Cyclically Adjusted PB Ratio Comparison

For the Utilities - Regulated Water subindustry, American Water Works Co's Cyclically Adjusted PB Ratio, along with its competitors' market caps and Cyclically Adjusted PB Ratio data, can be viewed below:

* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.


American Water Works Co Cyclically Adjusted PB Ratio vs Utilities - Regulated Industry

For the Utilities - Regulated industry and Utilities sector, American Water Works Co's Cyclically Adjusted PB Ratio distribution charts can be found below:

* The bar in red indicates where American Water Works Co's Cyclically Adjusted PB Ratio falls into.


MIL:1AWK
61GF Score
American Water Works Co Inc MIL:1AWK
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
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American Water Works Co Cyclically Adjusted PB Ratio Calculation

Like the Shiller PE Ratio, the Cyclically Adjusted PB Ratio takes the Book Value per Share from the past 10 years, adjusts it for inflation, and then calculates the average. This average is then used for the P/B calculation. Because it considers this 10-year average, it's often referred to as the CAPB Ratio.

The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio.

American Water Works Co's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 is calculated as:

For example, American Water Works Co's adjusted Book Value per Share data for the three months ended in Jun. 2026 was:

Adj_Book=Book Value per Share/CPI of Jun. 2026 (Change)*Current CPI (Jun. 2026)
=51.341/333.9520*333.9520
=51.341

Current CPI (Jun. 2026) = 333.9520.

American Water Works Co Quarterly Data

Book Value per Share CPI Adj_Book
201609 26.185 241.428 36.220
201612 27.778 241.432 38.423
201703 27.813 243.801 38.097
201706 26.478 244.955 36.098
201709 26.167 246.819 35.405
201712 25.131 246.524 34.044
201803 24.895 249.554 33.314
201806 27.219 251.989 36.072
201809 26.559 252.439 35.135
201812 28.390 251.233 37.737
201903 27.704 254.202 36.395
201906 27.733 256.143 36.158
201909 31.409 256.759 40.852
201912 30.158 256.974 39.192
202003 31.431 258.115 40.666
202006 31.143 257.797 40.343
202009 30.635 260.280 39.306
202012 29.095 260.474 37.303
202103 30.866 264.877 38.915
202106 31.082 271.696 38.204
202109 32.635 274.310 39.731
202112 35.337 278.802 42.327
202203 36.889 287.504 42.849
202206 39.832 296.311 44.892
202209 43.553 296.808 49.003
202212 39.637 296.797 44.599
202303 45.146 301.836 49.950
202306 45.677 305.109 49.995
202309 48.010 307.789 52.091
202312 45.544 306.746 49.583
202403 47.560 312.332 50.852
202406 48.610 314.175 51.670
202409 47.639 315.301 50.457
202412 51.189 315.605 54.165
202503 50.007 319.799 52.220
202506 46.643 322.561 48.290
202509 47.573 324.800 48.913
202512 47.277 324.054 48.721
202603 49.053 330.213 49.608
202606 51.341 333.952 51.341

Add all the adjusted book value per share together and divide the count will get our Cyclically Adjusted Book per Share.

Please note that we use the CPI data of the country/region where the company is headquartered. If the CPI data for that country/region is not available, then we will use the CPI data of the United States as default.

Is American Water Works Co (MIL:1AWK) Overvalued in 2026?

Based on GuruFocus' analysis, American Water Works Co stock appears to be undervalued. The current stock price of €120.05 is trading 11.6% below its estimated GF Value™ of €135.86. GuruFocus considers American Water Works Co to be Modestly Undervalued.

Key valuation signals for MIL:1AWK:

  • Cyclically Adjusted PB Ratio:
  • GF Value™: €135.86 vs. price of €120.05 (11.6% below fair value)
  • GF Score™: 61/100 with 3 warning signs

No single metric tells the full story. See the MIL:1AWK stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


American Water Works Co Business Description

Address 1 Water Street, Camden, NJ, USA, 08102-1658
American Water Works is the largest investor-owned US water and wastewater utility, serving nearly 4 million customers in 14 states. It provides water and wastewater services to residential, commercial, and industrial customers and operates predominantly in regulated markets. The company's nonregulated business is water services for military bases, which operates under long-term contracts with regulated-like returns. The proposed Essential Utilities acquisition would add regulated water and wastewater utilities in Ohio, North Carolina, and Texas while increasing its presence in Illinois, Indiana, Pennsylvania, New Jersey, and Virginia.
61GF Score

Get the complete analysis for MIL:1AWK

Cyclically Adjusted PB Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

€120.05
Price
€135.86
GF Value